I was not suggesting a conspiracy theory. It was the mainstream academic concern of that time. As for running out of space - if you look at US population density we aren't even in the same ballpark/area code of too high. I get it, from a personal level if that if you used to enjoy a particular rural area close to a growing city and now there is creeping development into that green space that may be a bummer, but it is no way is it an issue that needs families to alter their wishes for number of kids due to overpopulation - just not an issue in 2022.